In Operando Probing of Lithium‐Ion Storage on Single‐Layer Graphene

2019 ◽  
Vol 31 (23) ◽  
pp. 1808091 ◽  
Author(s):  
Kun Ni ◽  
Xiangyang Wang ◽  
Zhuchen Tao ◽  
Jing Yang ◽  
Na Shu ◽  
...  
Keyword(s):  
Single Layer ◽  
Lithium Ion ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Ion Storage ◽  
In Operando

Direct growth of an economic green energy storage material: a monocrystalline jarosite-KFe3(SO4)2(OH)6-nanoplates@rGO hybrid as a superior lithium-ion battery cathode

2016 ◽  
Vol 4 (10) ◽  
pp. 3735-3742 ◽  
Author(s):  
Wangwang Xu ◽  
Zhiqiang Xie ◽  
Xiaodan Cui ◽  
Kangning Zhao ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Single Layer ◽  
Lithium Ion ◽  
Green Energy ◽  
Single Layer Graphene ◽  
Storage Material ◽  
Excellent Performance ◽  
Layer Graphene ◽  
Direct Growth ◽  
Energy Storage Material

Single-layer graphene sheets serve as structure-directing agents and growth platforms for directly growing monocrystalline jarosite-KFe3(SO4)2(OH)6nanoplates, showing excellent performance as lithium ion battery anodes.

Comparative study of electron transfer on various graphene-metallic contacts

2019 ◽  
Vol 33 (31) ◽  
pp. 1950384
Author(s):  
Di Lu ◽  
Yu-E Yang ◽  
Weichun Zhang ◽  
Caixia Wang ◽  
Jining Fang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Layer ◽  
Annealing Treatment ◽  
Single Layer Graphene ◽  
Strain Effect ◽  
Graphene Surface ◽  
Layer Graphene ◽  
Metallic Contacts ◽  
Nonuniform Strain ◽  
Main Factor

We have investigated Raman spectra of the G and 2D lines of a single-layer graphene (SLG) with metallic contacts. The shift of the G and 2D lines is correlated to two different factors. Before performing annealing treatment or annealing under low temperature, the electron transfer on graphene surface is dominated by nonuniform strain effect. As the annealing treatment is enhanced, however, a suitable annealing treatment can eliminate the nonuniform strain effect where the relative work function (WF) between graphene and metal becomes a main factor to determine electronic transfer. Moreover, it is confirmed that the optimized annealing treatment can also decrease effectively the structural defect and induced disorder in graphene due to metallic contacts.

scholarly journals Millisecond lattice gasification for high-density CO2- and O2-sieving nanopores in single-layer graphene

2021 ◽  
Vol 7 (9) ◽  
pp. eabf0116
Author(s):  
Shiqi Huang ◽  
Shaoxian Li ◽  
Luis Francisco Villalobos ◽  
Mostapha Dakhchoune ◽  
Marina Micari ◽  
...  
Keyword(s):  
Single Layer ◽  
High Density ◽  
Single Layer Graphene ◽  
Pore Density ◽  
Vacancy Defects ◽  
Carbon Gasification ◽  
Layer Graphene ◽  
Gas Molecules ◽  
Good Agreement

Etching single-layer graphene to incorporate a high pore density with sub-angstrom precision in molecular differentiation is critical to realize the promising high-flux separation of similar-sized gas molecules, e.g., CO2 from N2. However, rapid etching kinetics needed to achieve the high pore density is challenging to control for such precision. Here, we report a millisecond carbon gasification chemistry incorporating high density (>1012 cm−2) of functional oxygen clusters that then evolve in CO2-sieving vacancy defects under controlled and predictable gasification conditions. A statistical distribution of nanopore lattice isomers is observed, in good agreement with the theoretical solution to the isomer cataloging problem. The gasification technique is scalable, and a centimeter-scale membrane is demonstrated. Last, molecular cutoff could be adjusted by 0.1 Å by in situ expansion of the vacancy defects in an O2 atmosphere. Large CO2 and O2 permeances (>10,000 and 1000 GPU, respectively) are demonstrated accompanying attractive CO2/N2 and O2/N2 selectivities.

Mass spectrometry imaging of untreated wet cell membranes in solution using single-layer graphene

2021 ◽  
Vol 18 (3) ◽  
pp. 316-320 ◽  
Author(s):  
Heejin Lim ◽  
Sun Young Lee ◽  
Yereum Park ◽  
Hyeonggyu Jin ◽  
Daeha Seo ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrometry Imaging ◽  
Cell Membranes ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene

Shedding Light on Pseudocapacitive Active Edges of Single-Layer Graphene Nanoribbons as High-Capacitance Supercapacitors

2019 ◽  
Vol 2 (5) ◽  
pp. 3665-3675 ◽  
Author(s):  
Mohammad Qorbani ◽  
Ali Esfandiar ◽  
Hamid Mehdipour ◽  
Marc Chaigneau ◽  
Azam Irajizad ◽  
...  
Keyword(s):  
Graphene Nanoribbons ◽  
Single Layer ◽  
Single Layer Graphene ◽  
High Capacitance ◽  
Layer Graphene
Sign in / Sign up

Export Citation Format

Share Document